In a Western capitalist country where a fascist government attempts to suppress a socialist uprising, revolutionary leader Thomas Lamm is imprisoned by the government but he escapes to the Soviet Union. There, he meets the engineer Podobed who invents the 'death ray' - a device which explodes gunpowder and fuel mixtures at a distance.

Porfiri Podobedas Podobed, engineer-inventor
Vsevolod Pudovkinas Pater Revo, catholic priest
Sergei Komarovas Tomas Lann
Vladimir Fogelas Fog, fascist
Alexandra Khokhlovaas Sharpshooter / Sister Edith